The physicists include five Nobel laureates, a recipient of the National Medal of Science and three past presidents of the American Physical Society, the nation’s preeminent professional society for physicists.

Their letter was prompted by recent articles in the Washington Post, New Yorker and other publications that one of the options being considered by Pentagon planners and the White House in a military confrontation with Iran includes the use of nuclear bunker busters against underground facilities. These reports were neither confirmed nor denied by White House and Pentagon officials.

The letter was initiated by Jorge Hirsch, a professor of physics at the University of California , San Diego , who last fall put together a petition signed by more than 1,800 physicists that repudiated new U.S. nuclear weapons policies that include preemptive use of nuclear weapons against non-nuclear adversaries (http://physics.ucsd.edu/petition/). Hirsch has also published 15 articles in recent months (http://antiwar.com/hirsch/) documenting the dangers associated with a potential U.S. nuclear strike on Iran .

“We are members of the profession that brought nuclear weapons into existence, and we feel strongly that it is our professional duty to contribute our efforts to prevent their misuse,” says Hirsch. "Physicists know best about the devastating effects of the weapons they created, and these eminent physicists speak for thousands of our colleagues.”

“The fact that the existence of this plan has not been denied by the Administration should be a cause of great alarm, even if it is only one of several plans being considered,” he adds. “The public should join these eminent scientists in demanding that the Administration publicly renounces such a misbegotten option against a non-nuclear country like Iran .”

Links to the must-read letter

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"As a matter of general principle, I believe that there can be no doubt that criticism in time of war is essential to the maintenance of any kind of democratic government. . . Too many people desire to suppress criticism simply because they think it will give some comfort to the enemy to know that there is such criticism. If that comfort makes the enemy feel better for a few moments, they are welcome to it as far as I am concerned, because the maintenance of the right of criticism in the long run will do the country maintaining it a great deal more good than it will do the enemy, and it will prevent mistakes which might otherwise occur."
-Robert A. Taft, Republican Senator from Ohio, Dec. 19, 1941

"Secrecy and a free, democratic government don't mix."
-Harry S. Truman, US President

"A dictatorship would be a heck of a lot easier, there's no question about it."
-George W. Bush, Business Week, July 30, 2001